Amplifier Power Management via Temperature-Adaptive Control

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Solution Overview

Problem

Existing methods for reducing power consumption in electronic devices, such as tuning the time constant or using an envelope tracking modulator, either fail to sufficiently lower power consumption or increase interference with adjacent channels, highlighting the need for new techniques that balance power management and interference.

Innovation Solution

An electronic device with a temperature sensing unit and a power management system that detects temperature changes to switch between different power control values, using a normal lookup table for low temperatures to minimize interference and a special lookup table for high temperatures to reduce power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the method of controlling a VCC bias according to power levels is used to reduce power consumption, then power consumption is reduced, but interference with adjacent channels increases

Engineering Contradiction:

Improvepower consumptionVSAvoidinterference with adjacent channels

Core Design Contradiction:

Use of energy by moving objectVSObject-generated harmful factors

Solution Approach 1:

The patent implements dynamic switching between a first control value and a second control value based on real-time temperature detection. When temperature exceeds a threshold, the system transitions from the first control value to the second control value, enabling adaptive power management that responds to thermal conditions rather than using static control

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the control parameter (control value) based on temperature conditions. The system uses different control values (first control value for normal operation, second control value for high temperature) to adjust the operation of the amplification unit, thereby changing system parameters dynamically to balance power consumption and interference

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If the method of tuning the time constant is used to improve power consumption, then power consumption is slightly reduced, but the reduction is insufficient

Engineering Contradiction:

Improvepower consumptionVSAvoideffectiveness of power reduction

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach effectively reduces power consumption while maintaining target powers and minimizing interference with adjacent channels by dynamically adjusting power control values based on temperature thresholds.

Implementation Method 1

detecting a current temperature of the electronic device when the amplification unit is in a first state

Methodology Applied

Scientific EffectTemperature sensing: Thermistor

Data Source

PatentUS10473532B2Method and apparatus for power management

Publication Date: 2019.11.12 SAMSUNG ELECTRONICS CO LTD

AI summary

A method for use in an electronic device having an amplification unit, the method comprising: detecting a current temperature of the electronic device when the amplification unit is in a first state in which the amplification unit is operated in accordance with first control value; detecting whether the current temperature meets a threshold; identifying a second control value that is lower than the first control value, when the current temperature meets the threshold; and changing an amount of power supplied to the amplification unit by transitioning the amplification unit into a second state in which the amplification unit is operated in accordance with the second control value.